Hello xCATlist,
For our new cluster we were looking for a similar way of node installation
as seen on Bright ClusterManager clusters.
We asked IBM if xcat featured a image install method, but this was not the
case. We have been looking at ways to get a similar solution, but were
unable to satisfy this need with the conventional xcat methods available.
I decided to try to implement a customized initrd which would rsync the
rootfilesystem from a service node to the computenodes.
I would like to share this software to the list in the hope it will be
useful.
It features:
* a partitioning layout boot kernel option in the form:
"partitionsinfo=/dev/sda1:linux-swap:2000:200,/dev/sda2:ext3:208000:208:/,/dev/sda3:ext3:40000:400:/usr"to
specify the required partition layout.
* rsync install of rootimage under directory /node-images/default-image
using kernel bootoption "image=/node-images/default-image"
* both full as update only rsync install
* sshd for debuging
More complete, documentation as well as the rpm can be found under:
https://imaster.hrz.tu-darmstadt.de/dokuwiki/doku.php?id=ibm:rsync_image_installation_of_nodes
This docuwiki article refers to an svn directory for the scripts, which is
not world readable, but all scripts are in the rpm.
When anyone finds bugs or adds features, please send your changes to the
email provided in the scripts.
Best regards,
Geert Geurts
HPC administrator TU-Darmstadt
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